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出 处:《工业建筑》2007年第z1期516-518,共3页Industrial Construction
基 金:国家自然科学基金资助项目(50408018)
摘 要:探讨杆内时模型在钢杆单向弯曲问题中的适用性,将计算结果与通用软件计算结果进行对比。分别对采用一个杆内时单元和多个杆内时单元计算悬臂杆算例,结果表明,前者的数值计算不收敛,随着迭代精度的提高计算结果反而更偏离实际。将一个杆划分为多个杆单元进行计算,当选取足够的迭代精度时计算结果可靠,可适用于工程中常用的截面型式。依据大量算例给出使用该模型时应采取的单元个数和迭代精度。The applicability of member endochronic model on describing the uniaxial bending behavior of steel member was studied.Numerical results were compared with common software data.A steel cantilever member was analyzed by a single element and multi-elements of member endochronic model.Examples showed that numerical result was nonconvergent for the case of single element.With the increment of iterative precision,the calculated curves were even getting far away from the real ones.When the member was modeled by series-wound multi-elements and an appropriate iterative precision was taken in the calculation,the numerical results are reliable and the model could be used for steel members with various section styles in common use.According to the numerical results of many examples,the paper provided the appropriate element numbers and iterative precision when using the member endochronic model.
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